navy yard



M.l P. MIX, OF U. S. NAVY YARD, YORK, N. Y.

STOll-."PEIR FOR CHAIN CABLES.

Specification of Letters Patent No. 998, dated November 3, 1838.

To all whom t may concern:

Be it known that I, M. P. MIX, commander in the Navy of the UnitedStates, have invented a new and Improved Stopper for Chain Cables to beUsed on Board of Ships and other Vessels, which I denominate theManger-stopper; and I do hereby declarethat the following is a full andeXact description thereof.

In the accompanying drawing Figure 1 is a part of the deck plan of avessel, showing the manner in which the stopper may be located. Fig. 2is a top view of the stopper, and Fig. 3 a side view. The other figuresrepresent parts in detail, to be presently eX- plained.

The same numbers refer to similar parts in all the figures.

No. 5, Figs. 1 and 3, is a bit of tough oak to which the stopper isaliXed. It may be made about sixteen inches square, stepped into thedeck below, with a check to the breast hook and a knee at the heelaccording to the roll and size of the ship.

No. 6 is a chock over which the cable ,y

passes on its way to the stopping apparatus. The front end of this chockis defended by a strong plate of cas-t iron c, a, Figs 2 and 3, whichhas a `groove b, Fig. 2, down the middle of it, for the edges of thelinks of the chain to pass through.

No. 2 is the upper vplate of the stopper, having a notch c in it throughwhich the vertical link passes, and which catches the horizontal one.This is hinged, or attached by bolts and eyes, as shown at 4, 4, to No.

3, which is a strong slide, moving back and forth in grooves in stoutiron checks 8, 8.

No. 1 is a screw, of which the cross bar 9 forms the nut; the end ofthis screw swivels in the slide 3 the opening at e, Fig. 4, beinggrooved slide and other permanent parts of the stopper are attached,this round opening passing also through the bit, No. 5. y Y

The slide, Fig. 4, hasa semicircular hollow at its end, so that whenpressed up by the screw it does not obstruct the passage of the chain.This passage may at any time be rendered free by turning back the upperplate of the stopper, although the slide may be forced up against thechock.

I-Iaving thus fully described the construction of my manger chainstopper and also shown the manner in which Vit operates, I claim as myinvention therein, and desire to secure by Letters Patent,

The combination of the slide with the upper plate of the stopper,constructed in the manner described and operated on by a screw as hereinset forth, so as to stop or allow a free passage to a 'chain cable, andthis I claim together with such variations thereof as will leave thegeneral construction substantially the same.

M. P. MIX.

Witnesses:

ANN MIX, ISABELLA A. MIX.

